CN203035986U - Flat-valve seat sealing structure - Google Patents
Flat-valve seat sealing structure Download PDFInfo
- Publication number
- CN203035986U CN203035986U CN 201220630457 CN201220630457U CN203035986U CN 203035986 U CN203035986 U CN 203035986U CN 201220630457 CN201220630457 CN 201220630457 CN 201220630457 U CN201220630457 U CN 201220630457U CN 203035986 U CN203035986 U CN 203035986U
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- CN
- China
- Prior art keywords
- valve seat
- valve
- sealing
- valve body
- seal ring
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- Expired - Lifetime
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Abstract
The utility model discloses a flat-valve seat sealing structure. The flat-valve seat sealing structure comprises a valve body and a valve seat, wherein the valve seat is assembled in an axial central hole of the valve body, the valve seat and the valve body are respectively and radially provided with a flow channel hole, the flow channel hole of the valve seat is correspondingly matched with the flow channel hole of the valve body, a part of the outer wall surface of the valve seat, on the periphery of the flow channel hole of the valve seat, is provided with an inner annular groove and an outer annular groove, U-shaped sealing rings are respectively embedded inside the two annular grooves, sealing is formed between the valve seat and the inner wall surface of the valve body through the two U-shaped sealing ring on the outer wall surface of the valve seat, and fluid inside the flow channel hole of the valve seat and fluid inside the flow channel hole of the valve body are prevented from entering a valve cavity. According to the flat-valve seat sealing structure, the valve seat is directly assembled in the axial central hole of the valve body, sealing between the valve seat and the valve body is realized by means of the U-shaped sealing ring installed on the outer wall surface of the valve seat and on the periphery of the flow channel hole of the valve seat, sealing effects are good, sealing is reliable and stable, the assembly structure that the valve seat is installed on the valve body is simple, and assembly is convenient. The flat-valve seat sealing structure is beneficial for reducing labor intensity of workers, improves assembly efficiency, and therefore effectively lowers production cost of flat valves.
Description
Technical field
The utility model relates to the control valve on oil gas production equipment and the transfer line, specifically is a kind of flap type valve base sealing structure.
Background technique
Flap type is one of important control unit on oil gas production equipment and the transfer line, and it mainly is made of parts such as valve body, valve gap, valve seat, flashboard, valve rod and handwheels.Wherein, valve body be axially arranged with center hole, center hole radially is provided with the runner hole as the assembling valve seat on valve body, the valve flowing channel hole communicates with the center hole of valve body; Valve gap is sealedly connected on the top of valve body by connecting bolt, is axially arranged with the perforation that communicates with the valve body center hole at valve gap, and the upper end of valve gap is connected with bearing support; Be axially arranged with flashboard on the valve seat and bore a hole, radially be provided with the runner hole, valve seat runner hole communicates with the flashboard perforation, valve seat is assemblied in the center hole of valve body, valve seat runner hole on the valve seat is corresponding with the valve flowing channel hole coupling on the valve body, be provided with backplate in the valve body center hole of valve seat bottom, form the valve pocket of sealing between backplate, valve seat and the valve body; Flashboard radially also be provided with the runner hole, this runner hole should be corresponding with valve seat runner hole, valve flowing channel hole coupling, flashboard is as slip in the flashboard perforation of valve seat, the top of flashboard is connected with valve rod; Valve rod passes the perforation on the valve gap, and extends from the top of valve gap, is connected with the handwheel lower end; The lower end of handwheel is connected with the upper end of valve gap, and the lower end of handwheel is assemblied in the bearing support of valve gap upper end by bearing.Referring to Fig. 1, in order to make flap type have the good through-flow and characteristic of damming, require valve seat runner hole and valve flowing channel hole on the flap type can form good linking sealing, namely require the fit up gap between valve seat 02 and the valve body 01 to form good sealing property, traditional seal approach is the place, valve flowing channel hole that valve seat 02 radially is embedded into valve body 01, form a bigger seam junction plane between valve seat 02 and the valve body 01, and in the evagination part that valve seat 02 embeds valve body 01 circumferential circular groove is set, assembly O RunddichtringO 04 in the circular groove of valve seat 02 evagination part, make the seam junction plane between valve seat 02 and the valve body 01 form excellent sealing by O RunddichtringO 04, simultaneously between the internal face of evagination part end face that valve seat 02 embeds valve body 01 and valve body 01, set up wavy spring 03, further improve the sealing effect of valve seat 02 and valve body 01 by the elasticity of wavy spring 03.The sealing measure can be played good sealing effect really, but, because the significantly radially damascene structures of valve seat on valve body makes that the assembling difficulty of valve seat on valve body is big, the assembly process complexity, labor strength is big, and efficiency of assembling is low, has directly increased the cost of production of flap type, and the flap type of this structure in use, the switch moment of demand is big, and poor reliability is practical inadequately.
Summary of the invention
The purpose of this utility model is: at above-mentioned the deficiencies in the prior art, a kind of good sealing effect, reliability height, practical flap type valve base sealing structure are provided, the sealing structure guarantee that flap type is through-flow and the prerequisite of the excellent that dams under, optimize the assembly structure of valve seat and valve body, be convenient to the flap type assembling.
The technical solution adopted in the utility model is: a kind of flap type valve base sealing structure, comprise valve body and valve seat, described valve seat is assemblied in the axial center hole of valve body, on valve seat and valve body, radially be provided with the runner hole respectively, valve seat runner hole is corresponding with valve flowing channel hole coupling, in the valve seat outer wall of periphery, described valve seat runner hole is provided with, outer twice circular groove, in the twice circular groove respectively assembly U-shaped seal ring is arranged, valve seat forms sealing by the internal face of the U-shaped seal ring of the twice on the outer wall and valve body, prevents that the fluid in valve seat runner hole and the valve flowing channel hole from entering valve pocket.
The U-shaped seal ring of assembly is the spring tension seal ring in the interior circular groove on the described valve seat outer wall, and the opening of sealing circle inwardly.
The U-shaped seal ring of assembly is the spring tension seal ring in the outer annular groove on the described valve seat outer wall, and the opening of sealing circle outwardly.
The beneficial effects of the utility model are: valve seat is assemblied in the axial center hole of valve body, the sealing of valve seat and valve body is to rely on the U-shaped seal ring that is embedded on the peripheral valve seat outer wall in valve seat runner hole to realize, good sealing effect, sealing is reliable, stable, valve seat need not to form significantly radially embedding at valve body, the package assembly of valve seat on valve body is simple, be convenient to assembling, be conducive to alleviate labor strength, improve efficiency of assembling, and then effectively reduce the cost of production of flap type, in use, the switch moment of flap type demand is little, and the reliability height is practical.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the valve seat conventional seals structure of flap type.
Fig. 2 is a kind of structural representation of the present utility model.
Fig. 3 is the local A enlarged view among Fig. 2.
Fig. 4 is U-shaped seal ring self tension force sealing schematic representation of the present utility model.
Fig. 5 is the sealing schematic representation of U-shaped seal ring of the present utility model under the system pressure situation.
Fig. 6 is the sealing schematic representation of the utility model after closing valve.
Code name implication among the figure: 01,1-valve body; 02,4-valve seat; 03-wavy spring; 04-O RunddichtringO; 2-backplate; 3-flashboard; 5-interior U-shaped seal ring; 6-outer U-shaped seal ring; 7-valve rod; 8-valve gap; 9-connecting bolt; 10-valve rod sealing assembly; 11-bearing support; 12-bearing; 13-handwheel; 14-valve pocket; 15-valve flowing channel hole; 16-valve seat runner hole.
Embodiment
Referring to Fig. 2 and Fig. 3: a kind of flap type valve base sealing structure, this flap type mainly is made of parts such as valve body 1, valve gap 8, valve seat 4, flashboard 3, valve rod 7 and handwheels 13.Wherein, valve body 1 be axially arranged with center hole, center hole radially is provided with the runner hole as assembling valve seat 4 on valve body 1, valve flowing channel hole 15 communicates with the center hole of valve body 1; Valve gap 8 is sealedly connected on the top of valve body 1 by connecting bolt 9, is axially arranged with the perforation that communicates with valve body 1 center hole at valve gap 8, and the upper end of valve gap 8 is connected with bearing support 11; Be axially arranged with flashboard on the valve seat 4 and bore a hole, radially be provided with the runner hole, valve seat runner hole 16 communicates with the flashboard perforation, valve seat 4 is assemblied in the center hole of valve body 1, valve seat runner hole 16 on the valve seat 4 is corresponding with valve flowing channel hole 15 couplings on the valve body 1, be provided with backplate 2 in valve body 1 center hole of valve seat 4 bottoms, form the valve pocket 14 of sealing between backplate 2, valve seat 4 and the valve body 1; Flashboard 3 radially also be provided with the runner hole, this runner hole should be corresponding with valve seat runner hole 16, valve flowing channel hole 15 couplings, flashboard 3 is as slip in the flashboard perforation of valve seat 4, the top of flashboard 3 is connected with valve rod 7; Valve rod 7 passes perforation on the valve gap 8 by valve rod sealing assembly 10, and extends from the top of valve gap 8, is connected with handwheel 13 lower ends; The lower end of handwheel 13 is connected with the upper end of valve gap 8, and the lower end of handwheel 13 is assemblied in the bearing support 11 of valve gap 8 upper ends by bearing 12.The sealing configuration of aforementioned valve seat 4 on valve body 1 specifically is, in valve seat 4 outer wall of 16 peripheries, valve seat runner hole are provided with, outer twice circular groove, assembly has the U-shaped seal ring of spring tension in interior circular groove, the opening of this U-shaped seal ring inwardly, U-shaped seal ring 5 namely, assembly has the U-shaped seal ring of spring tension in outer annular groove, the opening of this U-shaped seal ring outwardly, U-shaped seal ring 6 namely, valve seat 4 prevents that by the internal face formation sealing of the U-shaped seal ring of the twice on the outer wall (U-shaped seal ring 5 and outer U-shaped seal ring 6 namely) with valve body 1 fluids in valve seat runner hole 16 and the valve flowing channel hole 15 from entering valve pocket 14.
Referring to Fig. 4, Fig. 5 and Fig. 6: U-shaped seal ring and outer U-shaped seal ring are to be made of the U-shaped metallic elastic spare that is coated with Furtulon or senior engineering plastic in above-mentioned, the actuating effect of U-shaped metallic elastic spare can overcome the slight eccentricity of fitting surface and the abrasion of sealing lip, thereby continue to possess the sealability of expection, be fit to be applied to various high temperature, corrosive fluid, and do not have swelling, have advantages such as the sealing lip friction factor is low, seal contact pressure stable, compression resistance is high, radial deflection is bigger.U-shaped seal ring and outer U-shaped seal ring be when system low-voltage and zero-pressure work in aforementioned, relies on the initial sealing power of himself tension force that valve seat 4 and valve body 1 are sealed; When raising along with system pressure, the main sealing force of interior U-shaped seal ring and outer U-shaped seal ring is formed by system pressure, add the initial sealing power of self tension force, guaranteeing has reliable sealing effect from the zero-pressure to the high pressure, and valve seat 4 and valve body 1 are formed good, sealing reliably; In addition, interior U-shaped seal ring and outer U-shaped seal ring can also close the sealing behind the valve, be that flashboard 3 is located in the backplate 2, flashboard 3 blocks the valve seat runner hole 16 on the valve seat 4, when the sealing configuration of left end valve seat 4 lost efficacy, fluid in valve flowing channel hole 15 and the valve seat runner hole 16 enters valve pocket 14, the interior U-shaped seal ring 5 of right-hand member valve seat 4 and outer U-shaped seal ring 6 are by self tension force and hydrodynamic pressure, between valve body 1 and valve seat 4, and form good between flashboard 3 and the valve seat 4, sealing reliably, stop fluid to enter in the valve seat runner hole 15 and valve flowing channel hole 16 of right-hand member, reach good sealing effect.
Claims (3)
1. flap type valve base sealing structure, comprise valve body (1) and valve seat (4), described valve seat (4) is assemblied in the axial center hole of valve body (1), on valve seat (4) and valve body (1), radially be provided with the runner hole respectively, valve seat runner hole (16) is corresponding with valve flowing channel hole (15) coupling, it is characterized in that: in peripheral valve seat (4) outer wall in described valve seat runner hole (16) is provided with, outer twice circular groove, in the twice circular groove respectively assembly U-shaped seal ring is arranged, valve seat (4) forms sealing by the internal face of the U-shaped seal ring of the twice on the outer wall and valve body (1), prevents that the fluid in valve seat runner hole (16) and valve flowing channel hole (15) from entering valve pocket (14).
2. according to the described flap type valve base sealing of claim 1 structure, it is characterized in that: the U-shaped seal ring of assembly is the spring tension seal ring in the interior circular groove on described valve seat (4) outer wall, and the opening of sealing circle inwardly.
3. according to the described flap type valve base sealing of claim 1 structure, it is characterized in that: the U-shaped seal ring of assembly is the spring tension seal ring in the outer annular groove on described valve seat (4) outer wall, and the opening of sealing circle outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630457 CN203035986U (en) | 2012-11-26 | 2012-11-26 | Flat-valve seat sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630457 CN203035986U (en) | 2012-11-26 | 2012-11-26 | Flat-valve seat sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035986U true CN203035986U (en) | 2013-07-03 |
Family
ID=48688115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220630457 Expired - Lifetime CN203035986U (en) | 2012-11-26 | 2012-11-26 | Flat-valve seat sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035986U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486284A (en) * | 2013-09-04 | 2014-01-01 | 苏州市燃气设备阀门制造有限公司 | Gate valve holder structure |
| CN116988759A (en) * | 2023-09-21 | 2023-11-03 | 什邡慧丰采油机械有限责任公司 | Full-automatic high-pressure-resistant intelligent manifold system and working method thereof |
-
2012
- 2012-11-26 CN CN 201220630457 patent/CN203035986U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486284A (en) * | 2013-09-04 | 2014-01-01 | 苏州市燃气设备阀门制造有限公司 | Gate valve holder structure |
| CN116988759A (en) * | 2023-09-21 | 2023-11-03 | 什邡慧丰采油机械有限责任公司 | Full-automatic high-pressure-resistant intelligent manifold system and working method thereof |
| CN116988759B (en) * | 2023-09-21 | 2023-12-08 | 什邡慧丰采油机械有限责任公司 | Full-automatic high-pressure-resistant intelligent manifold system and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |